Validation of Precise Orbit Determination Tool for the Korean Positioning System

Jaeuk Park, Changdon Kee

Abstract:	Since orbit accuracy of navigation satellites affects the positioning accuracy of users, need for real-time precise orbit determination orbit is growing for precise real-time applications. In this study, we seek to verify a precise orbit determination algorithm for analysis of potential performance of Korean positioning system using the simulated and actual observations of similar system, QZSS. We compare precise orbit determination results from extend Kalman filter using simulated and actual QZSS observations to verify the validity of the filter in the algorithm. For the analysis, double-differenced ionosphere-free carrier phase measurements from 3 IGSO and 1 GEO QZSS satellites and 29 IGS stations are mainly used. For results from both simulated an actual measurements, we found decimeter level accuracy for satellite orbit. From the similar tendency in results from both simulated and actual case, we could verify the validity of precise orbit determination algorithm.
Published in:	Proceedings of the ION 2026 Pacific PNT Meeting April 13 - 16, 2026 Hilton Waikiki Beach Honolulu, Hawaii
Pages:	300 - 307
Cite this article:	Park, Jaeuk, Kee, Changdon, "Validation of Precise Orbit Determination Tool for the Korean Positioning System," Proceedings of the ION 2026 Pacific PNT Meeting, Honolulu, Hawaii, April 2026, pp. 300-307. https://doi.org/10.33012/2026.20615
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